Angle joint for building system



FIG. 1 is a perspective view of an angle joint for a building systemshowing my new design;

FIG. 2 is an elevational view thereof from the rear;

FIG. 3 is a sectional view taken on line 3--3 in FIG. 2; and

FIG. 4 is a bottom plan view thereof.

The ornamental design for an angle joint for building system, as shown.